Peculiarities of constant magnetic field effect on the nanostructural organization and properties of hard-to-weld polyethylene-polypropylene joints

Abstract

Using WAXS and SAXS methods it was founded that constant magnetic field effect on the melt of polymers (i.e. on the polymers in viscous-flow status, where the structure elements have the maximum mobility) causes formation of oriented welded joint structure with the axle coincides with the magnetic field effect direction. This effect causes improvement of operation properties of the welds due to the orientation of magnet-anisotropic macromolecules and aggregates in the polymer melts. Basing on the mechanical tests results it was founded that tensile strength of PE-80/PP-80 joint welded under the effect of constant magnetic field (acting transversally to the welding axle) is 12 MPa, and of welded without magnetic field effect is 6 MPa.